急性溃疡性结肠炎结肠显示粘膜隐窝有小脓肿，腺腔内可见中性粒细胞渗出 。黏膜下层有严重的炎症。不典型炎症中腺体缺少杯状细胞和细胞核深染。
The colonic mucosa of active ulcerative colitis shows "crypt abscesses" in which a neutrophilic exudate is found in glandular lumens. The submucosa shows intense inflammation. The glands demonstrate loss of goblet cells and hyperchromatic nuclei with inflammatory atypia.
